Beamer



F. LAMBACH March 6, 1945.

BEAMER Filed Nov. 2li

1941 3 sheets-sheet 1 JNVENTOR.

Ijz'tz Lambach Aornefy March e, 1945. F AMBACH 2,370,672 l BEAMER FiledNov. 21, 1941 5 Sheets-Sheet 2 1N VEN TOR. FJZ'Z Lamba c/z, BY AA'ofzzey F. LAMBACH March 6, 1945.

BEAMER 3 Sheets-Sheet 3 Filed Npv. 21, 1941 mmm m.

fname-ff a, ATTORNEY Patented Mar. 6, 1945 UNITED STATES PATENT "OFFICEBEAMER Fritz Lambach, Fairview, N. J.

`Application November 21, 1941, Serial.No.-419,833 17 c1aims- (c1.1472-179) My invention relates to textile machines, and moreparticularly toa beamer or the like.

`An object of my invention is `to improve upon the rconstruction ofbeamers or the like as now ordinarily made.

My invention consists yin certain novel features of construction of my`improvements as will be hereinafter fully described.

4Further objects and Yadvantages of the invention will be `apparentdrom`the following disclosure of `an embaiiment thereof.

In the accompanying drawings is:

Fig. `1 an` elevationalviewof a beaming plant including a beamer and aicreeL-only the end portion-of said creel being shown in the drawings,

Fig. 2 a fragmentary .front elevational View of the upper portion offthebeamer'illustrating the controlling-.mechanismfor the actuation of the"Stop-Inch-Start-Station of the motor control system,

Fig. 3 an-elevationaliview of the Stop-Inch- Start-Station seen in thedirection of the arrow 3 shown in Fig. 2,

Fig. 4 is atop .plan view of the Stop-Inch- Start-Station showninFig..f3, and

f Fig. 5 adiagramfof the wiring system for the electrical equipment ofthe beaming plant, wherein the `switches are shown=in their normalposition when the .relays are deenergized.

Referring now 'to Fig. l, 100 generally indicates a. beamenand240lpgenerally indicates a creel arranged `at a suitable distance fromthe former. An.A.C. toD. C. motorfgeneratorset generally indicated by2600 is mounted in a suitable manner `within fthe-casing of the beamer.

The A. C. to D. C. vmotor-generator set 2600 is supplied withalternatingcurrent from an electrical source (not shown) through Itheline 30 (see Fig. 5)'.1eading to anhand switch 3540, which may bemounted on a wall ofthe beamer as indicated by broken linesin Fig..1.The A. C'. to D. C. motor zeneratorset 2600 delivers direct current tovarious electrical vequipments `of the beaming plant through theelectrical .connections shown in Fig. 5.

VA detailed description of the construction of the beamer Amay be Afoundinmy U. S, Patent #2,342,151 granted on-February 22, 1944, on my patentapplication Ser. #457,134 divided out of this patentapplication Ser.#419,833. Hereinafter, only those parts of the beamer will be described,which -are necessary for-the understanding of lthelinventionset forthinthe appended claims.

:A'D. C. electromotor '.4600 mounted in a suitable manner within'thecasing vof rthe beamer 100'is one 4of the various `electrical`equipments of thebeaming plantl arranged for electrical vconnectionwiththe A. C.-to D;V C. motorgenerator set 2600. If `the'electromotor4600 :is `started* in a manner tobe described hereinaften-afbeam 4400inserted into the-beamer .in a-suitable manner is 'rotated bytheelectromotor 4600'through themediumcof abelt drive generally indicatedby |04 and a gear transmission H2, 1I4. During the normal operation ofthe beamingplant the warp yarns 3400 travel from the bobbins 3600mounted lin the creel 2400 throughs. reed-8|! securedto the casingofthebeamer `toa measuring roll `'16B rotatably mounted on .thebeamer andthence to the beam-4400 driven bythe r,electromotor 4600. Themeasuring-roll'lis arranged fordriving a shut oi counter 18800 fin asuitable, manner.

According to :the invention, `the electromotor 4600 may be controlled bya"Stop-Inch-Start Station 656 diagrammatically shown in the upper rightportionizof the wiringd-iagram illustrated in Fig. 5. i-"Saidfstop-Inch-Start-Station" 656 cornprises a start switch 3820,:an inchingspeed switch 4900 and a Ystop fswitch'4l40 arranged on the inside ofanupperextension ,-914 ofa side -Wall of the beamer as shown `in Figs..1-4. The electrical connection of these vswitches `with ,the circuitsof the electrical equipment of .the beamer Will be "describedhereinafterin connection with the description of thediagram of Figr. Atthis portion Iofi-the specication it isfsufcient to state, that aclosing:of vboththe startisv/itch v:i020 and g the inching :speed switch.4900may cause an operation of the electromotor 4600 at anextremely lowspeed, i. e. aso-called'inching speed, that Aa closing .of lthestartswitch 3820 alonemay cause an operation ofthe electromotor '4600 atnormal high speed, and that lan opening of the stop switch -4140 causesan :interruption of the supply of curr-ent fromthe A. C. :to D.. C.motor :geniaior set :2600 for .stopping the velectromotor As best. shown1n.Figs.-.3,an'd 4,.the startswitch 382.0,andI thestop switch -4 |40 ofthe Stop-Inch- Start-Station 56 aredirectlymounted onthe cree1,.2400`through.wreed-8l2 `secured to the casing of riheheamertofarmeasuringrroll '168 rotatably mounted ton the beamer and `thence Vto abeam4400insertedinto the beamer and driven by an .electromotor 4600 Yaswillbe .described here- .The .shaft -108 of .the .electromotor 4600.carries a grooved step pulley106. Acomplem'enta-rystep pulley 1I0 issecured to one end of a main shaft 182 rotatably arranged in a bearing8I4 carried by the frame of the beamer. The other end of said main shaft102 carries a pinion 'H2 and a friction pulley 8I6 keyed thereto. Themain shaft 102 may be rotated by the electromotor 4888 through belts 104trained around complementary portions of the step pulleys 106 and 1I0.The electromotor 4600 is mounted on a support 8I8 secured to a rod 820rotatably arranged on a supporting member 822 resting on two spacingtubes 824 and 826 secured to the walls ofthe beamer. Owing to thedescribed mounting of the electromotor 4600 the latter tends to swingthe support 8I8 by its weight about the fulcrum 828 in clock-wisedirection, whereby the belts 104 are automatically tensioned.

A pedal 828 is secured to the end -of the rod 828 projecting from thewall of the beamer. If it is desired to change the speed ratio, thesupport 8I8 carrying the electromotor 4600 may be swung incounter-clockwisedirection by'means of the pedal 828, whereby the belts104' are loosened, so that they may be easily transferred from one stepof the complementary step pulleys 106 and 1I0 to the other step thereof.After the carrying out of this transfer the pedal may be released, sothat the belts are automatically ten- `sioned in their new position bythe weight of the electromotor 4660 acting on the swinga-ble support8I8.

The beam 4400 to be inserted into the beamer has two flanges 830 and832. A gear 1I4 is secured to the beam adjacent the flange 8.3.0.Furthermore a brake drum 134 and a brake drum 834 are secured to thebeam outside the flanges 838 and 832 respectively. The gear 1I4 may beused for engagement with the driving pinion 1 I 2, and the brake drum134 may be used for engagement with the driving friction pulley 816.

On each side of the beamerva supporting member or cradle 1I6 and 836respectively is swingably arranged for receiving a beam 4400 and liftingsame into operating position with the gear 1I4 in engagement with` thepinion HL2 and the brake drum 134 in engagement with the friction pulley8I6. The supporting member 1 I 6 is rotatably mounted on the cylindricalsurface of the bearing I 4, as best shown in Figs. l and 4. Likewise,the supporting member 836 is rotatably mounted on the cylindricalsurface of a bearing 838 securedv to the other side wall of the beamer,as best shown in Fig. 3. A shaft 840 carrying a bearing roller 842 forengagement with the brake drum 834 of the beam 4400 is rotatablyarranged in said bearing 838. Each supporting member 'H6 and 836respectively is provided with a gear segment 1 I8 and 844 respectively.The gear segment 118 meshes with a pinion 120, and the gear segment 844meshes with a pinion 846. The pinions 120 and 846 are keyed to atransverse shaft 122 rotatably arranged in the side walls of the beamer.One end of the shaft 122 projects from the wall of the beamer andcarries a worm gear 124 meshing with a self-locking worm 126 secured tothe lower end of a spindle 128 rotatable in bearings 848, 850 mounted onthe wall of the beamer. The upper end of the spindle 128 carries a handwheel 130, by means of which the spindle may be rotated for lifting orlowering the supporting members 1I6 and 836. At the free end f eachsupporting member a roller 132 and 852 respectively is rotatablyarranged for bearing engagement with the brake drums 134 and 834respectively of the beam 4400.

In order to insert a beam into the beamer, the supporting members 1I6and 836 are moved into their lower receiving position by turning thehand wheel in one direction. position, the bearing roller 132 is in theposition 132 shown in Fig. l. After a beam 4400 has been placed onto thesupporting members, the latter are lifted by turning the hand wheel 130in opposite direction, until the supporting members and beam reach theoperating position `shown in full lines in Fig. 1. In said operatingposition, the gear 1 I4 is in engagement with the driving pinion 1I2,the brake drum 134 is in contacting engagement with the driving frictionpulley 8 I 6 and the bearing roller 132, and the brake drum 834 is incontacting engagement with the bearing rollers 842 and 852. During thedescribed lifting of the supporting members and the beam, rods 854 and856 projecting from each end of the beam are in engagement withstationary cams 858 and 860 mounted on the frame of the beamer. The cams858 and 860 are of such a shape, that they lift the teeth of the gear1I4 to a certain extent above the teeth of the driving pinion 1Ii2,whereupon they permit an engagement of the teeth of the gear and pinionin a substantially radial direction. The self-locking worm 126 and aspring loaded pawl 862 cooperating with a ratchet wheel 864 secured tothe spindle 128 prevent an undesired return of the supporting members 1I 6 and 83B into the receiving position under the load of the beam.Furthermore, one end of a screw threaded bolt 856 and 868 respectivelyis pivoted to the `free end of each supporting member at 810 and 812respectively. When the supporting members 1 I 6 and 836 are in theirupper operating position, the bolts 866 and 868 may be swung upwardsinto slots 814 and816 respectively of brackets 818 and 880 respectivelysecured to the frame of the beamer; thereupon nuts 882and 384respectively may be screwed onto the ends of the bolts projecting fromthe brackets, whereby the supporting members 1 I 6 and 836 are locked intheir upper position.

As best shown in Figs. 1 and 4, a lug 136 arranged on the swingablesupporting member 1I8 cooperates with a spring loaded control element65| of a safety switch 650 mounted on a wall of the beamer. As long asthe lug 136 is disengaged from the control element 65| the spring (notshown) acting on said element holds the safety switch 650 in openposition as shown in the right portion of the wiring diagram of Fig. 10.As will be described hereinafter, the safety switch 650 is arranged inthe line 386 of the motor start circuit and motor start holding circuit,so that the electromotor 4600 cannot be operated as long as the safetyswitch 650 is in open position. The safety switch 650 is closed onlyupon engagement of the lug 136 with the spring loaded control element65| when the supporting member 1I6 is in its upper operating positionshown in full lines in Fig. l. Therefore, the electromotor 4680 can bestarted and operated for driving the beam 4400 through the belts 104,pinion 1I2 and pulley 8I6 only when the beam carried by the supportingmembers 1I6 and 836 is in operating position with its gear 1I4 in meshwith the driving pinion 1I2 and with its brake drum 134 in contact withthe driving friction pulley 8I6. As soon as, after a disengagement ofthe bolts 866 and 888 from the slots of the brackets 818 and 880 andafter a disengagement of the pawl 862 from the ratchet wheel 864 bymeans of a lever 886, the hand wheel 130 is rotated for a lowering ofthe supporting In said receiving' enmenmc'mbers 1li fand83$,`the Slug`135is 'disengaged from the-control element I of the safetyv switchmgfsolthat the latteris 'opened by its spring and the :motor :start'circuiti-.is interrupted, `whereby a starting ofthe electromotor 4600is rendered 1mpoible.

As best 4shown .in Figs. 2 and 4, on each side4 of the beamer adjustingmeans, vgenerally indicated by i088, are arranged for adjusting the beam4400 in the direction of its longitudinal axis ina-proper positionrelative to a pressure roll |320 mounted inthe beamer for cooperationwith the vWinding on the beam in amanner to be .described hereinafter.Each adjusting means 088 comprisesa hollow sleeve S90-screwed into ascrew threaded hole of the wall of the beamer. A rod 092 carrying at oneendthereof a fork-like portion `|394 extends `through .the bore of thesleeve. A roller 996 is rotatablyarranged in the fork 094. The shoulderof the fork abuts against one eend of the sleeve 890, and a set collar898 secured to the rod rests `on the other end of the sleeve, so that aninward or outward movement of the sleeve in the direction of its longi-Atudinal axis upon rotation thereof by means of prns900 secured theretocauses a corresponding inward or outward movement of the rod 892 and the`roller 896. The free end of the rod has a squareportion 902 slidablyengaged with a slot of a `bracket; 904 secured to the wall Yof thebeamer, whereby the rod is prevented from rotating in the sleeve 890.When, after the insertion of a beam into the beamer, the beamslidablyresting on the rollers of the supporting members-has beenbrought into the .operating position, the beam may be shifted in thedirection of its longitudinal axis into the proper position relative tothe pressure roll by rotating the sleeve 890 of-the proper adjustingmeans y898 for moving Athe roller 89E associated therewith inwards incontact with the `surface of one brake drum of the beam and bycontinuing the inward movement `of the roller, until the beam has beenshifted by the roller into the desired position. Then, the roller of theother adjusting means 888 4is moved inwards in contact with the surfaceof the other brake drum of the beam. Thus.

the beam is guided by the two rollers of the twol adjusting means duringits rotation, whereby an undesired oscillationin the direction of itslongitudinal axis is eliminated.

The pressure roll |320 is rotatably mounted on a swingable assemblygenerally indicated by 138. The assembly `138 comprises two double-armedlevers 906 and 908, one on each side of the beamer. The hub 9|0.of thelever 906 is swingably mounted on a stud.140 secured to a side wallofthe beamer, and the hub 9|2 of the lever 908 .is swingably mounted on astud 9|4 secured to theopposite side wall of the beamer. A rod 9I9 isrigidly connected to the upper end of the long arm of the lever 90B. Oneend of an arm 9|'8is secured to said rod 9|6, thev other end of.

said arm 9|8 carries a roller bearing 920, wherein ashaft 922 secured toan end disc 924 of the pressure roll |320 is rotatably arranged.Likewise a rod 926 is rigidly connected to the upper end of the long armof the lever 908, and one end of an arm 9 28 is secured to said rod 926,while the other end of said arm 928 carries a roller Ybearing 930,wherein a shaft .932 secured to the opposite end disc 934 ofthe pressureroll |320 is rotatably arranged. The two end discs 924 and 934 ofthepressure roll |320 are ,con-

nested wltheanhvother by a cylindrical portion sas. l'rhus, thepressure-m11 lazo is rotatable about 'the `pivots `922 'and 932 and isswingable 'toand .fro `the `beam 4400 about thepivots 114.0

and 9l4.

vlIhe pivots and 9|4 are arranged insucna relationship to the center ofthe pressure `roll |320, .that the pressure roll? tends tomovey by itsown weight toward lthe beam 4400 in the direction of the arrow A 'shownin Fig. l, whereby the pressure roll subjects the winding on'the beamlto a certain pressure. The position of the .pressure roll varies independence on the diameter of'the winding on the beam. When'the`pressure rollis in the position shown in Fig. 1, the beam` is fullandthe .diameter of the wndingis large. At the beginning of the beamingoperation, however, the diameter `of the winding on thebeam isconsiderably smaller, and the center of the pressure roll isconsiderably nearer to thecenter of the beam. Owing .to this change intheposition of the center of the pressure roll the latter would exert aconsiderably greater pressure on the winding on the beam at thebeginning ofthe beaming operation, if there were no means provided foracting on the assembly 138 to compensate said difference in pressure. Asbest shown in Figs. 1.-3 this compensating means comprises a tensionspring 940 stretched between the long` teraction. The spring 940 is sodesigned and arranged, that, during the entire beaming operation, thepressure roll ysubjects the winding on.

the beam to a substantially constant pressure irrespective of thevariation in the position or the pressure rollin dependence on theincrease of the diameter of the winding. When the pres.

sure roll is in the position shown in Fig. 1, the spring 940 iscontracted, so that it causes no action on the pressure .roll assembly.

Furthermore, two counter-weights 142, one on each side of the beamer,counteract the action of the weight-I ofthe pressure roll on the windingon the beam, whereby the pressure on the winding is reduced .to a lowdegree as it may be desirable for the beaming of warps of certainmaterials. Each counter-weight 142 is adjustably mounted on the long armof a bell crank lever 944 pivoted to the side wall of the beamer at,946. The short arm of said bell crank leveris pivoted to one endof alink 948 at 950. The other end of said link 948 is pivoted to the shortarm of the double-armed lever 999 or 909 respectively at 952. serve tolimit the extremepositions of the lever 944 and of the pressure rollassembly 138, |320 connected with said lever.

If it is desired to subject the winding on the beam to an appreciablesubstantially constant pressure during the beaming operation, thearrangement shown in Fig. 9 may be used. The

142m' is adjustably mounted on a lever` :944' piv-H 'Ihe spring 940Adjustable set screws 354- tated in clockwise1direction and its elevatedportion urges the. control element 3821 against the actionof its springto the right, whereby the start switch 3820 is closed. At the same time,the lever;986 is Yturned in clockwise direction and the active portionB-D of the cam-like surface of the element 166 resting. against the stop54 slides along the` control element 4910 and urges same againstthe-action of itsspring to the left, whereby the inching speed switch4900A is closed. Thus, the start switch 3820and the inching speed switch4900 are closed and the electromotor 4000 ls operated at inching speedas long as the shipper rod 158 is held against the action of the spring160 in above described position wherein the elevated portion of the cam984'contacts the control e1ement'3821 andthe point D of the element 166contacts the control element 4910.

If thel shipper rod 158 is turned further the intermediate position inthe direction of the arrow C into an extreme active position, the cam984 andthe lever 906 are turned further in clockwise direction. Theelevated portion of the cam 984' is of such-a length, that, duringthiscontinuation ofthe rotation of the shipper rod'158, the elevatedportion of :the cam remains in contact with the control element 3821'andholds the start switch 3820` in closed position; the point E of theelement 166, however, slips off the free end of the control element4910, whereby the control elementA 47910 is released and the springacting on said` control element 4910 returns same intol the positionshown in Fig. 3 for an opening of the inching speed switch. Thus,thestart switch 3820 remains in closed position, while-the inching speedswitch 4.900 isopened, so that the electromotor'4600is operated atnormal high speed.

As soon as -the shipper rod158'is released, the spring 160 causesarotation of the shipper rod in the direction of the arrow F and a returnof the mechanism'158, 992, 1764, 985, 984, 166 into the neutral positionshown in full lines in Fig. 3. During said return of the mechanism, thecam 984 and the lever 966 are rotated in counterclockwise direction.Shortly` before the cam 984 reaches the neutral position, the elevatedportion the lever 986 in counter-clockwise direction, the r point E ofthe swingab'le element 186 hits the lower surface of the control element4910, whereby the swingable element 166 is swung against the action ofthe spring50 in counter-clockwise direction'about the pivot 9,88 withoutaltering' the position of the controlelenient 4910 as indicated in dash`and dot linesl in Fig. 3. Shortly before the lever 986 reachestheneutral position, the'point Eof the swingable element 166 slips off thefreeend ofthe control element 4910, so that the swingable element 166 isswung by the spring 450 in clockwise direction about the pivot 988against the st op'54. Thus, -no actuation of the inching speed switch44900 has taken place and all elements ofthernechanism B, 992, 164',986, 984, 166 arejagainin the position shown in full lines in Fig. 5after the return of said mechanism bythe spring 160 into theY neutralposition. Although the start switch 3820 `is opened after the release oftheV shipper rod 158 andthe return from` of `theniechanism-into theneutral position, the high speed operationofthe electromotor4600 iscontinued in the; embodiment of the beamer shown in the drawings, as theelectrical connections include a motor start holding circuit as will bedescribed hereinafter in connection with the description of Fig. 5;

During above described movement of the shipper'rod 158 from the neutralposition in the direction of the arrow C and-back into the neutralposition in the direction of `the' arrow F, the stop switch 4140-is notactuated, asonly the round inactive portion of the cam 984 contacts thecontrol elementr41141and does not'A cause a shifting thereof.

If it is desired to stop the-.beamerV by hand, the shipper rod158is'turned from' thel neutral position1shown iny Fig; 3 in thevdirection of the arrow` F into'a second" extreme active position. Thisrotationl of the-'shipper rod causes a rotation of the cam 98'4'incounter-clockwise direction. As soon as the elevatedportio'n of the cam984 engages the spring' loaded control element 4141, the latter is urgedagainst` the action of its spring (not shown)y to the left, whereby thestop switch 4140 is opened andthe beamer is' immediately stopped;- Uponrelease ofthe shipper rod, the latter is turned in thejdirection of thearrow C by the spring 160 andthev mechanism'158, 992, 164, 986, 984,T66' is returned*v into the neutral position shown inv full lines inFig. 3, wherein the stop switch 4140 isclosed andthe start switch 3820and,I the inching speed switch 4900 are opened asdescribed above.

During above described movement of the shipper rod`158 from theneutralgposition in the direction of the arrow F and lback into theneutral position in'the directionV of the arrow C, the

i start switch 3820 and the inching speed switch 4140 are not actuated.During said movement of vthe shipper rod, only the round inactivevportion of the cam 984 contacts the control element 3821 of the startswitch, `so thatthe position thereof remains unchanged. Furthermore, thesurface B-G'of the element`166is of such' a shape, that it does notcause any movement of the control element'4910 of the inching speedswitch 4900', when the lever 986 is swung in counter-clockwise directionfrom the neutral position and is returned subsequently into said neutralposition.

Referring now to Fig. 5 illustrating the wiring system for theelectrical equipment of the beaming plant; the circuits forythe-operation and the control of certain parts'of the beaming plantwill be described hereinafter. For the remaining circuits reference ishad to the description of said remaining circuits infmyPatent'#2,324,61l relating to An Electrical Control System for a Warpingor Beaming Plant Vissued on July 20,1943, wherein said circuits are morefully described.

The A. C. motor 352 ofI the A. C. toD. C. motor generatorr set' 2600 issupplied' with alternating current from an electric source (not shown)through the lines 30fupon closure of the hand switch 3540.' IThe'generator 356 ofthe A. C. to D. C. motor generator set 2600 produces thedirect current.

The generator 356 is arranged in the following main motor circuit: Theterminal 358 of the generator 356 is connected with the terminal 360 ofthe driving D. C; electromotor 4606 of the Vbeamer through the line362including the elecing electromotor 4800 through the line 312 includingthe pole M1 of the triple pole main switch M controlled bythe trip coilmagnet 314, the solenoid 318 of an overload circuit breaker and theseries eld 380 ofthe electromotor 4600.

As will be apparent from the foregoing, the electromotor 4600 drivingthe beam inserted into the beamer may be started by closing the pole M1of the main'switch M. This pole M1 may be closed by an energization ofthe trip coil magnet 314,'which is arranged in the following motor startcircuit: A line 384 leads from the righthand terminal of the startswitch 3820 to the lefthand terminal of the overload circuit breaker318, the right-hand terminal of which is connected with the trip coilmagnet 314 by the line 386 including the safety switch 650 controlled bythe lug 136 on the swingable supporting member 1I6 in the mannerdescribed above. A line 888 leads from the trip coil magnet 314 to themovable finger 3900 of the automatic motor field rheostat 2580controlled by the movable pressure roll assembly of the beamer independence on the increase of the diameter of the winding on the beam4400 during the operation of the beamer.

The coil 3920 of the automatic motor field rheostat 2580 is connectedwith one end of the shunt eld 394 of the electromotor 4600 through aline 396. The other end of the shunt iield 394 is connected with theleft-hand terminal oi the start switch 3820 through a line 398. Currentis suppliedto above described motor start circuit from the exciter 456of the A. C. to D. C. motor generator set 2600 by means of a line 452connecting the terminal 454 with a junction point 448 in the line 388and by means of a. line y418 connecting the terminal 458 with a junctionpoint 416 in the line 398. A safety switch 650 mounted in a suitablemanner n the beamer 100 is held in its open position as long as a beam4400 is not lifted into the operating position shown in Fig. l..Furthermore, the start switch 3820 is normally held in its open positionby the action of a spring (not shown) as described above. If the safetyswitch 650 is closed upon a movement of the beam into the operatingposition shown in Fig. 1, and if the start switch 3820 is closed by arotation of the shipper rod in the direction of the arrow C from theneutral position shown in Fig. 3, the above described motor startcircuit is closed, whereby the trip coil magnet 314 is excited forclosing the main switch M with its pole M1, which in turn closes theabove described main motor circuitfor starting the electromotor 4600.The action of the inching speed switch 4900, which is closedsimultaneously with the start switch 3820 and causes a slow speedoperation of the motor 4600 will be described hereinafter in connectionwith the description of the circuits including said inching speedswitch. o

When the trip coil magnet 314 is excited by closing above describedmotor start circuit by means of the spring loaded start switch 382 0,the pole M2 of the main switch M is also closed, whereby a motor startholding circuit including the trip coil magnet of the main switch `isclosed as will be described hereinafter, so that the main switch remainsin closed position upon a subsequent release of the spring loaded startswitch by a return of the mechanism controlling the start switch intothe neutral position shown in Fig. 3. Said motor start holding circuitmay be traced as follows starting from the left-hand terminal of thestart switch 3820: The line 398, the shunt field 394, the automaticrheostat 2,580, the

line 388, the trip coil magnet 314 of the main switch M, the line 386,the safety switch 650, the bridge of the overload circuit breaker 318,and the line 400 connecting the left-hand terminal of the circuitbreaker 318' with the left-hand terminal of the start switch 3820, saidline 400 including the pole Nb of the main switch M, the switch 402 of acounter stop relay 404, the switch 406 of a warp brake relay 408, theelectromagnet 410 of a time relay 4I2, and the stop switch 4l40 normallyheld in closed position by a spring (not shown).

The main switch M is opened and the supply of direct current to theelectromotor 4600 is interrupted at the pole Mz, as soon as the abovedescribed motor start holding circuit including the trip coil magnet 314is interrupted either at the stop switch 4|40 or at the circuit opening'switch 406 of the warp brake relay 408 or at the circuit openingswitch`402 of the counter stop relay 404 or at the safety switch 650.The opening of the spring loaded stop switch 4|40 takes place when thebeamer is arrested by hand by turning the shipper rod 158 in thedirection of the arrow F from the neutral position shown in Fig. 3. Theopening of the switch 406 takes place when one or more control needles4160 in the creel 2400 drop and close a needle control circuit owing toa breakage of yarnY as will be described hereinafter. The opening of theswitch 402 takes place when the normally closed switch 4I80 of the shutoff counter 9800 is opened after the performance of a predeterminednumber of revolutions of the beam as more fully described in my Patent#2,324,611 issued on July 20, 1943. The opening of the safety switch 650takes place when the supporting member carrying the beam 4400 moves awayfrom the operating position.

Any of above mentioned interruptions of the motor start holding circuitcauses an energization of an electromagnet 612 of a torque motor relay814, whereby a three-pole switch S is closed for supplying current to atorque motor 112 associated with the brakes of the beamer, so that thetorque motor is excited and the brakes of the beamer are applied. Theelectromagnet 612 of the torque motor relay 614 is arranged in thefollowing brake circuit starting from `the terminal 804 of the secondarywinding 546 of a 10W voltage transformer 548:' A line 616 leading fromthe terminal 804 of the secondary winding to the left-hand terminal of abrake control switch 430 controlled by the electromagnet 434 of a brakecontrol relay 432; a line 618 connecting the right-hand terminal of thebrake control switch 43u with the electromagnet 612; a line 680connecting the electromagnet 612 with the righthand terminal of theswitch 424 of the time relay 4t2; and a line 682 connecting theleft-hand terminal of the switch 424 with the terminal 806 of thesecondary winding 546. The primary winding 514 of the low Voltagetransformer 548 is connectedA with two lines of the A. C. supply line inthe following manner: a line 428 leading from the junction point 426 tothe junction point 5I0 connected with one end of the primary winding 514by aline 516; the portion of a line 5 I 6 between a junction point 5l 4and a junction point 5 I1, and a line 518 connecting the junction point511 with the other end of the primary winding 514. The electromagnet 434controlling the brake control switch 430 of the brake control relay 432is arranged in the following brake control circuit: A line 436 leadingfrom the electromagnet 434 to the junction point 438, the portion of theline 388 from said junction point 43B to the tripcoil magnet 314, theportion of the line 386 leading from the trip coil magnet 314 to thejunction point 440, and the line 442 connecting said junction point 440with the electromagnet 434. Thus, as soon as the motor start holdingcircuit including the trip coil magnet 314 is interrupted at'the stopswitch 4l40 or the circuit opening switch 406 or the circuit openingswitch 402 or the safety switch 650, the described brake control circuitincluding the electromagnet 434 of the brake control relay 432 is alsointerrupted, so that the electromagnet 434 is deenergized and the brakecontrol switch y43j! is closed. At the same time, the electromagnet 410of the time relay 4| 2, which is larranged in the motor start holdingcircuit including the trip coil magnet 314 is also deenergized. Owing tothe delaying action of the time relay 4I2., however, the switch 424remains for a short period, for example 2 sec., in the closed position424 shown in dash lines', so that the brake circuit including theelectromagnet 612 of the torque motor relay 614 will be closed and thelatter will cause a closing of the switch S for an energize,- tion oithe torque motor 112 and an application of the various brakes of thebeamer, as soon as the -electromagnet 434 of the brake control relay 432is deenergized and the brake control switch 430 thereof is closed. Aftersaid short period of 2 sec., for example, however, thevswitch 424 of thedeenergized time relay 4|2 comes into the open position shown in fulllines, so that the electromagnet 612 of the torque motor relay 614 isdeenergized, whereby the switch S is opened and the supply of current tothe torque motor 112 is interrupted. Thus, the brakes of the beamer arereleased after a short period of application corresponding to thedelaying action of the vtime relay. Incidentally, it may be mentioned,that a restarting of the electromotor 4600 causes an energization of theelectromagnet 410 of the time relay 412, which is arranged in the motorstart holding circuit, so that the switch 424 is again closed so as torender the brake circuit ready for the next braking operation in themanner described above.

The torque motor 112 is connected with the three phases of the A. C.supply line in the following manner: A line 420 leading from thejunction point 422 to the junction point 506, a line 660 leading fromthe junction point 506 to the terminal 662 `of the torque motor, saidline including the po-le Si of the triple pole switch S controlled bythe electromagnet 612 and a first coil of the adjustable resistor 558controlled by thev pressure roll assembly the beamer in dependence onthe increase of the diameter ofthe winding on the beam; the line 428leading from the junction point 426 to the junction point 5| 0, a line664 leading from the junction point SIU to the terminal 666 of thetorque motor, said line including the pole S2 of the switch S and asecond coil of the adjustable resistor 658,; the portionof the line 516leading from the junction point 5|4 to the junction point 5| 1, a line668 leading from the junction point 5I1 to the terminal-610 of thetorque motor, said line including the pole S3 of the switch S and athird coil of the adjustable resistor 658. Thus, above described closingof the switch S by the electro- Athe torque motor is controlled by theadjustable resistor 653 in dependence on the diameter of .the winding onthe beam.

In the embodiment shown in Fig. 5, the elec'- trical control system for'the beamer is also equipped with lan electrical brake, which becomeseffective in addition to the lmechanical brakes of the beamerr actuatedby the torque motor. For this `purpose an adjustable dynamic brakingresistor 684 is connected with the junction points 606 and 68S in the.lines 362 and 312 of the main motor circuit by means of a line 696including a -switch A602 of a dynamic `resistor relay 694. rIlheelectromagnet 696 of said relay 694 is arranged in parallel totheelectromagnet 434 of the brake control relay 432 by means of lines 898.Therefore, 'the electromagnet i696 is excited and the switch 692controlled by said electromagnet is open as long as the motor startholding circuit is closed and the electromotor 4600 drives the beam. yAssoon as the motor start holding circuit is interrupted in any of abovedescribed manners and the electromagnet 434 of the brake control relay43,2 and the electromagnet 696 of the dynamic resistor relay 694 aredeenergized, the switch 692 is closed and shorts the electrom'otor 4666through the dynamic braking resistor 684, whereby an additional brakingof the rotating mass Vof the beam connected with the electromotor isobtained. The above described electrical brake including the adjustabledynamic braking resistor 684 may `be used for an additional adjustmentof the braking time required for bringing the mass of the beam to astandstill. Of course, the `electrical brake may be entirely omitted, ifdesired.

As pointed out above, the automatic motor eld rheostat 2530 controlledby the pressure roll assembly of the beamer, in dependence on theincrease of the diameter of the winding on the beam M60 is arranged inthe motor start holding circuit. Said motor field rhe'ostat 2580 servesto cause an automatic reduction of the operating speed `of theelectromotor 4600 from a predetermined normal degree to a lower degree,so that a substantially constant trave-lling speed of the warp yarnsresulting in a substantially constant r tension in the yarns is obtainedduring the operation of the beamer. The normal travelling speed of thewarp yarns is determined by said predetermined normal `operating speedof the electromotor 4660 at the beginning of the beaming oper-ationafter the termination of the inching speed operation. Different yarns ofdifferent size and/or material require diierent travelling speeds toobtain the proper tension in the yarns. For this purpose, an additionalelectrical adjusting means or a generator field hand rheostate 3500 ismounted on a side wall of the beamer as shown in Fig. l. The generatorfield hand rheostat 3500 may be used for a manual adjustment of saidpredetermined normal operating speed of the electromotor 4600 drivingthe beam and is arranged in the following normal speed control circuit:A line 444 leads from the end 445 of the coil 446 of the `generatorfield hand rheostat 3500 to the pole M3 of the main switch M, which inturn is connected with the junction point 4h18 in the line 338v by aline 450. The line 452 leads from said junction point 448 to theterminal '454 of the exciter 466. The terminal 458 of the exciter 456 isconnected with one end of the iield 4.60 of the D. C'. generator 356 bya portion of the line 418 at the point 410. The other end of the field460 is connected with the movable finger-464 of the hand rheostat 3500through a line 466 including the speed control switch 468 of the warpbrake relay 408. The end 441 of the coil 448 of the hand rheostat 3500is connected with the junction point 410 through a line 412 leading to ajunction point 414, through the portion of the line 398 connecting thejunction point 414 with a junction point 416, and through a portion ofthe line 418 connecting the junction point 416 with the junction point410. As will be apparent from the described connections, the generatorfield 460 is energized by the exciter 458 which generates a constantpotential. This potential is applied t a circuit comprising theleft-hand portion (as viewed in Fig. of the coil 446 of the generatorfield hand rheostat 3500 in parallel with the generator eld 460 and theright-hand portion of the coil 446 of the generator field hand rheostat3500 in series with these. A manual movement of the finger 464 acrossthe generator eld hand rheostat 3500 Will cause a variation of thepotential applied to the generator eld 460 and, consequently, aVariation of the current flowing through this generator eld during thenormal operation of the beamer. If, for example, the linger 404 is movedto the right, the energization of the generator eld and the current:dowing through said generator eld are increased. Therefore, the currentflowing through the generator fleld is in proportion to the setting ofthe linger 464 of the hand rheostat 3500. This current, when high, givesa high voltage generated by the generator 356, when low, a low voltagegenerated, i. e. the potential generated by the generator is Variable.The normal operating speed of the electromotor 4600 at the beginning ofthe beaming operation after the termination of the inching speedo-peration is de- .I

termined by the Voltage of the direct current supplied to theelectromotor, and, therefore, the normal operating speed of theelectromotor may be easily adjusted by means of the generator field vhand rheostat 3500.

As will be apparent from the foregoing, the generator eld hand rheostat3500 serves to adjust a predetermined normal operating speed of theelectromotor 4680 of the beamer by hand, while the automatic motor`field rheostat 2580 controlled by the pressure roll assembly of thebeamer serves to automatically reduce the operating speed of theelectromotor 4500 from said predetermined normal value to a lower value,so as to obtain a substantially constant tension in the yarns and/orconstant travelling speed of the yarns respectively during the beamingoperation. For a better explanation of my invention, the operation ofthe electromotor at said normal operating speed and at said reducedlower operating speed shall be termed the normal high speed operation ofthe electromotor in contrast to the very low speed operation or theso-called inching speed operation of the electromotor 4600, which isdesirable under certain circumstances, for example, rst, after theoccurrence of a yarn breakage and the tying of the ends of the brokenyarn, until the Slack in the yarn or yarns has been taken up, or,second, at the beginning of a beaming operation, until a few layers ofthe winding have been wound on the beam.

The operation of the electromotor 4600 at normal high speed operation orat inching speed operation is controlled by the speed control switch 468of the warp brake relay 408, which in turn is controlled by the controlneedles 4I 610 in the creel and/or by the inching speed switch 4900 onthe beamer as will be described hereinafter. The speed control switch408 is arranged in the normal speed control circuit including thegenerator eld 460 and the generator eld hand rheostat 3500 as describedabove. As long as the electromagnet 482 of the warp brake relay 408 isdeenergized and the speed control switch 468 is closed, the electromotor4600 may operate at normal high speed operation as described above. If,however, the speed control switch 468 is opened by an energization ofthe electromagnet 482 upon the dropping of a control needle M owing to abreakage of yarn or upon ythe manual closing of the inching speed switch4900, the generator eld hand rheostat 3500 is disconnected from thegenerator field 460. An adjustable inching resistor 484 is arranged inseries with the generator field 450 between the junction points 486 and458 in the lines 465 and 444 respectively, so that, after the abovementioned disconnection of the generator eld hand rheostat 3500 from thegenerator eld 450, the current now may flow thro-ugh the followinginching speed control circuit: exciter 450, line 462, generator field460, line 466, inching resistor 484, line 444, pole Ma, lines 450, 452.Therefore, under these circumstances and upon a closing of the mainswitch M including the pole M3, a current proportional to the combinedresistance of the generator field 460 and the adjustable inchingresistor 484 arranged in series with each other will pass through thegenerator eld, setting up a uX which will pro- 'duce the low voltagerequired for the low inching speed and the low torque of theelectrornotor 4600. It may be mentioned, that this flux, and thereforevoltage and torque, are independent of the setting of the generatorfield hand rheostat 3500, as the latter is disconnected from thegenerator eld 450. On the other hand, the generator field hand rheostat3508 will bereconnected with the generator field 460 and a furtheroperation of the electromotor 4600 at inching speed will be renderedimpossible as soon as the speed control switch 468 controlled by theelectromagnet 482 of the warp brake relay 408 will be returned intoclosing position upon a return of the control needle 4150 and/or theinching speed switch 4900 into open position.

Now, the circuits controlling the electromagnet 482 of the Warp brakerelay 408 containing the speed control switch 46S will be descsribed.

The electromagnet 482 is arranged in the following warp brake relaycontrol circuit: A line 568 connects the electromagnet 482 with thelefthand terminal of a switch 566 controlled by an electromagnet 555 ofa warp brake sensitive intermediate relay 558; a line 5l2 leads from theright-hand terminal of said switch 566 to a junction point 518 in aline550; the portion of the line 550 that leads from said junction point 510to the terminal 804 of the secondary winding 545 of the lower voltagetransformer 548; the secondary winding 546; a line 544 leading from thesecondary winding 546 to the junction point 542, and the portion of aline 540 that leads from said junction point 542 to the electromagnet482.

Obviously, the electromagnet 482 of the warp brake relay 45B will beexcited for opening the speed control switch 458, as soon as theelectromagnet 555 of the warp brake sensitive intermediate relay 558 isexcited for closing the switch 566.

The electromagnet 556 is arranged in the fol- 'lowing needle controlcircuit: A line 630 connecting the electromagnet 556 with onetermina-lof a `creel terminal base 632 mounted on the creel 2400; thecontrol needle M60, a line 634 leadingr from the `other terminal ofthecreel terminal base 632 to the junction point 534; the line 530`connecting the junction 'point 534 with the junction point 538; theportion of the line 540 that connects the junction point 538 with thejunction point 542; the line 644; the secondary winding 546 of the lowvoltage transformer 548; the line 550 up to the junction point 552; anda line 554 connecting the junction point 552 with the electromagnet 556..Although Fig. diagrammatically illustrates only one control needle 4|60ai-, ranged on the creel terminal base 632, the creel carries aplurality of control needles 4l60, one for each warp yarn 3400 to bedrawn from a bobbin 3600'as shown in Fig. 1.

If one or morecontrol needles 4l60 of the creel drop owing to. abreakage of yarn, the above de scribed needle control circuit is closed,whereby the electromagnet 556 of the warp brake sensitive intermediaterelay 558 is excited, so that the switch 566 is closed which in turncauses an excitement of the electromagnet 482 of the warp brake relay408 resulting in an opening of the speed control switch 468 and of thecircuit opening switch 406. The latter causes an interme- 4 diatestoppage of the beamer and application of the brakes as described above.The brakes are released after a short period of application as describedabove. The switches 408 and 408, how` ever, remain in open positionafter the tying of the ends of the broken` yarn as long as one or morecontrol needles 41.60 are in dropped position due to slack in a. yarn oryarns. Thus, the electromotor 4600 can be restarted at lnching speedonly by closing the start switch 3020 by hand and holding same in closedposition, until the slack in the yarns has been taken up; asv soonas,upon removal o the slack in the yarns, all control needles 4|60 areagain in their open position and the switches 406 and 460 are againclosed, the' start switch 3020 may be released for return into ltheneutral position shown Fig.Y 3 by the action of the spring T60,whereupon the operation of the electromotor 46.00 will continue atnormal high speed, as new the motor start holding ctrcuit. including theswitch 408 andthe normal speed control circuit including the switch 468are closed.

The manual inching speedI switch 4800 is connected with the warp brakerelay control circuit in parallel to the switch 566. of the warp brakesensitive intermediate relay 558 by lines 652. Thus, a closingv of theinching speed switch; 4900 may also cause anv energization of theelectromagnet 402 oi the warp brake relay 400 and an. opening of theswitches 400 and 460. As pointed out above, the inchi'ng speed switch49011` is normally in the neutral position shown in Fig. 3, wherein thespring acting on. its control element 4910 holds the inching speed'switch in open. po-` sition.. Ii,` for the start of the. beamer, theship per rod. 158 (Fig. 3)A is turned in thedirection of the arrow Cinto the intermediate position described above, both, the start switch3820 and' the; inching speedv switch 49,00? arey closed. Although' theclosing of the inching` speed switch 4800" causes an opening of thecircuit opening. switch 406 arranged in the motor start holding circuit,the electromotor 4600 may be operated as long as the; start switch 3020-arranged in the; motor start circuit is held in. closing position; but,the elec:- tromotor 4600 may be` operated at inching speed' only, as,under these circumstances; the speed control` switch 468 is also held inopenpositioir byv the .closing o! the` melun: speed switch 4800. As

soon as, after the laying of a few windings on the beam, the shipper rod158 is turned further from the intermediate position in the direction ofthe arrow C into 'the extreme active position, the inching speed switch4900 is opened, while the start switch 3820 lremains in closed position.The opening of the inching speed switch 4900 causes A an automaticclosing of the speed control switch 468 resulting lin an automaticincrease of the speed of operation of the electroniotor 4600 to normalhigh speed operation. Furthermore, the opening of the inching speedswitch 4900 results inthe closing of the motor start holding circuit .bythe switch 406. Now, the shipper rod 158 maybe released for a returninto the neutral position by the action of the spring 160i; theoperation of the electromotor 4600 .continues at normal high speed, asthe switches 406 and 468 controlled by the electrorriagnetA 482 inresponse to the opening of the inching speed switch 4900 are in closedposition.

The operation of the electromotor 4600 is arrested and the brakes of thebeamer areapplied, when thev shipper .rod 158 is turned from the neutralposition in the direction of the arrow F (Fig. 3) for an opening of thestop switch 4 [40, or when a. control needle 4F60 drops' and causes anopening of the switch 406, or when the safety switch G50 is opened; inall these cases the motor start holding circuit is interrupted.

Furthermore, an interruption of the motor start holding circuitresulting 'in 'a stoppage of the electromotor 4600 and an application ofthe brakes takes place, when the normally closed switch H of the shutoff' Counter 8800 is opened after the performance of a predeterminednumber of revolutions of the beam and causes an opening of the switch402 of the counter Stop relay 404. Reference is had to my Patent#2,324,- 611 relating to An Electrical Control System for a Warping.` orBeaming Plant, issued on July 20, 1943, for a full description of thecircuits connecting the shutoft` counter 9800 withthe counter stop relay404i Moreover, referenceI is had? to the same APatent #2,324,611 issuedon July 20`-, 1943, for a detailed description of! the Reset Station654r with the reset push button 61160' and; the pilot lamp 6240 and.their' electrical connections with the electri` cal control system.Incidentally, it may' be meni tioned, that the electromagnet 606` of theshut of: counter relay 502 is excited and the switch 580 of saidrelayopened and' the switch 50| of said relay is" closed when theelectrical' con A trol; system' isi set' for an operation of the beaming. plant` upon arr actuation of the spring loads ed reset push button6I60'. The Reset-Station 054 is mounted ori the extension 914 of theside wall; of the beamer as best shownin Figs. 1 and 2.

A. reversible motor 4800 for driving the rollers 198i and moving thebeamer sidewise in one direction or the other is electrically connectedthrough lines 522, 524, 526 with a hand re versing swr-'itch 4960'-'irlounted ont'lfie wall of the' beamen The reversing switch risen* iselectrically connectedwith the junction poi-nts 50's, 510, 5H through1in-cs` sus', 5PZ and 51e,

I have described preferred embodiments of my invention, but ift is;clear that numerous changes and ommissions may berna-de withoutdeparting from the spiritcf my invention.

l What` I claim is:

i. A beamer comprising: an el'ectroinotor for rotating' av beam: to windthe: warp thereon, al start switch for an electrical connection with theneutral position and being adapted to ren-l der operative said stopswitch upon a movement in the opposite direction from the neutralposition.

2. A beamer comprising: an electromotor for rotating a beam to wind thewarp thereon, a

start switch for an electrical connection with said electromotor, a stopswitch for an electrical con.

nection with said electromotor, a controlling assembly for the actuationof said start switch and said stop switch, said assembly including amovable controlling member and a rotatable actuating cam, saidcontrolling member being operatively connected with said cam, and meansassociated with said controlling assembly for normally holding theelements thereof in a neutral position, said cam being adapted to renderoperative said start switch upon a rotation in one direction from theneutral position and being adapted to render operative said stop switchupon a rotation in the opposite direction from the neutral position.

3. AV beamer comprising: an electromotoi` for rotating a beam to Windthe warp thereon, a start switch for an electrical connection with saidelectromotor, an inching speed switch for an electrical connection withsaid electromotor, and movable controlling means for the actuation ofsaid start switch and said inching speed switch, said controlling meansbeing normally in a neutral position and being adapted to render activesaid start switch and to render active and subsequently to renderinactive said inching speed switch during a movement from the neutralposition. v

a. A beamer comprising: an electromotorior rotating a beam to wind thewarp thereon, a start switch for an electrical connection with saidelectromotor, an inching speed switch for an electrical connection withthe electromotor, and a controlling assembly for the actuation of saidstart switch and said inching speed switch, said controlling assemblybeing normally in a neutral position and including a movable controllingmember, a rotatable actuating cam, a swingable lever, an actuatingelement pivotally mounted on said lever, stopping means on said leverfor limiting the movement of said actuating element in one direction,and a spring associated with said actuating element for urging sameagainst said stopping means, said controlling member being operativelyconnected with said actuating cam and said lever for a simultaneousmovement of these elements from and into the neutral position, saidactuating cam being adapted to render active said start switch during amovement of the controlling member from the neutral position into anextreme active position, said actuating element being adapted to renderactive and subsequently to render inactive said inching speed switchduring said movement of the controlling member from the neutral positioninto the eXtreme active position, and said actuating element beingadapted to yield against the action of its spring without renderingactive said inching speed switch yduring the return of the controllingmember from the extreme active po sition into the neutral position.

said electromotor, an inching speed switch for an electrical connectionwith said electromotor,

a stopswitch for an electrical connection with saidelectromotor, andmovable controlling means for the actuation of said start switch saidinching speed switch and said stop switch, said controlling means beingnormally in a neutral position, said controlling means being adapted torender active said start switch and to render active and subsequently torender inactive said inching speed switch during a movement in onedirection from the neutral position, and said controlling means beingadapted torenderoperative saidy stop switch` during a movement in theopposite direction from .the neutral position.

6. A beamer comprising: an electromotor for rotating a beam to wind thewarp thereon, a start switch for an electrical connection with saidelectromotor, an inching speed switch for an electrical connection withthe electromotor, a stop switch for an electrical connection with saidelectromotor, a controlling assembly for the actuation of said startswitch said inching speed switch and said stop switch, said controllingassembly including movable controlling member, a rotatable actuatingcam, a swingable lever, an actuating element pivotally mounted on saidlever, stopping means on said lever for limiting the movement of saidactuating element in one direction, and a spring associated with saidactuating element for urging same against said stopping means7 saidcontrolling member being operatively connected with said actuating camand said lever for a simultaneous movement of these elements, and meansassociated with said controlling assembly for normally holding theelements thereof in a neutral position, said actuating cam being adaptedto render active said start switch during a movement of the controllingmember in one direction from the neutral position into a rst extremeactive position, said actuating element being adapted to render activeand subsequently to render inactive said inching speed switch duringsaid movement of the controlling member from the neutral position intosaid rst extreme active position, said actuating element being adaptedto yield against the action of its spring without rendering active saidinching speed switch during the return of the controlling member fromthe rst extreme active position into the neutral position, and saidactuating cam being adapted to render operative said stop switch duringa movement of the controlling member in opposite direction from theneutral position into a second extreme active position. y

'7. A beamer comprising: an electromotor for rotating a beam to wind awarp thereon, a start switch for an electrical connection with saidelectromotor, a stop switch forv an electrical connection with saidelectromotor, movable controlling means arranged for the actuation ofboth said start switch and said stop switch, and means associated withsaid controlling means 4for selecting one of said actuationsby saidcontrolling means.

8. A beamer comprising: an electromotor for rotating a. beam to wind awarp thereon, a start switch for an electrical connection with saidelectromotor, an inehing speed switch for an electrical connection withsaid electromotor, movable controlling means arranged for theactuationof said start switch and said inching speed switch.

lrotating a beam to wind a warp thereon, `a start switch for anelectrical connection with said electromotor, an inching speed switchfor an electrical connection with said electromotor, reciprocablecontrolling means arranged for the actuation of said start switch andsaid inching speed switch, said reciprocable controlling means beingnormally in a neutral position, and actuating means associated with saidcontrollingl means for a substantially simultaneous actuation of saidstart switch and said inching speed switch and for a, subsequent releaseof said inching speed switch alone during a movement of said controllingmeans from its neutral position into an extreme active position for theactuation of said start switch, said actuating means being of such ashape and construction so as to leave said inching speed switch in itsreleased condition during the return of the controlling means from saidextreme active position into said neutral position.

10. In combination with a beamer as claimed in claim 9: resilient meansassociated with said reciprocable controlling means, said resilientmeans being arranged for urging said controlling means into said neutralposition.

11. A beamer comprising: an electromotor for rotating a beam to wind awarp thereon, a start switch for an electrical connection with saidelectromotor, an inching speed switch for an electrical connection withsaid electromotor, and a controlling assembly arranged for the actuationof said start switch and said inching speed switch, said controllingassembly being normally in a neutral position and including areciprocable controlling member and an actuating member associated withsaid controlling member, said controlling member being arranged for anactuation of said start switch during a. movement of said controllingmember from its neutral position into an extreme active position, saidactuating member being arranged for an actuation and a subsequentrelease of said inching speed switch during said movement of saidcontrolling member from said neutral position into said extreme activeposition, and said actuating member being of such a shape andconstruction so as to leave said inching speed switch in its releasedcondition during the return of the controlling member from said extremeactive position into said neutral position.

12. A beamer comprising: an electromotor for rotating a beam to wind awarp thereon, a start switch for 'an electrical connection with saidelectromotor, an inching speed switch for an electrical connection withsaid electromotor, a stop switch for an electrical connection with saidelectromotor, movable controlling means arranged for the actuation ofsaid switches, actuating means associated with said controlling meansfor a substantially simultaneous actuation of said start switch and saidinching speed switch and for a subsequent release of said inching speedswitch alone during a movement of said controlling means for anactuation of said start switch, and means associated with saidcontrolling means for preventing an actuation of said stop switch duringan actuation of said start switch and for preventing an actuation ofsaid start switch during an actuation of said stop switch. 1

` 13. A beamer comprising: an electromotor for rotating a beam to wind awarp thereon, a start switch for an electrical connection 'with saidelectromotor, an inching speed switch for an electrical connection withsaid electromotor, a stop switch for an electrical connection with saidelectromotor, reciprocable controlling means normally in a neutralposition, said reciprocable controlling means being arranged for anactuation of said start switch and said inching speed switch during itsmovement from its neutral position into a rst extreme active positionand being arranged for an actuation of said stop switch during itsmovement from its neutral position into a' second extreme activeposition, and actuating means associated with said controlling means fora substantially simultaneous actuation of said start switch and saidinching speed switch and for a subsequent release of said inching speedswitch alone during a movement of said controlling means for anactuation of said `start switch, said actuating means being of such ashape and construction so as to leave said inching speed switch in itsreleased condition during the return of the controlling means from saidfirst extreme active position into said neutral position.

14. In combination with a beamer as claimed in claim 13: resilient meansassociated with said reciprocable controlling means, said resilientmeans being arranged for urging said controlling means into said neutralposition.

15. A beamer comprising: an electromotor for rotating a beam to wind awarp thereon, a start switch for an electrical connection with saidelectromotor, an inching speed switch for an electrical connection withsaid electromotor, a stop switch for an electrical connection with saidelectromotor, and a controlling assembly arranged for the actuation ofsaid switches, said controlling assembly being normally in a neutralposition and including a reciprocable controlling member and anactuating member associated with said controlling member, saidcontrolling member being arranged for an actuation of said start switchduring a movement of said controlling member from its neutral positioninto a first extreme active position, said actuating member beingarranged for an actuation and a subsequent release of said inching speedswitch during said movement of said controlling member from said neutralposition into said first extreme active position, said actuating ,memberbeing of such a shape and construction so as to leave said inching speedswitch in its released condition during the return of the controllingmember from said rlrst extreme active position into said neutralposition, and said controlling member being arranged for an actuation ofsaid stop switch during a movement of said controlling 4member from itsneutral position into a second extreme active position.

16. A beamer comprising: an electromotor for rotating a beam to windwarp thereon, a start switch for an electrical connection with saidelectromotor, a stop switch for an electrical connection with saidelectromotor, movable controling means for the actuation of both saidstart switch and said stop switch, said controlling means being arrangedfor rendering operative said start switch upon a movement in onedirection from a neutral position and being arranged movable controllingmember and actuating means, said controlling member being operativelyconnected With said actuating means, and

said actuating means being arranged for rendering operative said startswitch upon a movement of said controlling member in one direction froma neutral position and being arranged for render- 'ing operative saidstop switch upon a movement of said controlling member in the oppositedirec- 1o tion from the said neutral position.

FRITZ LAMBACH.

